US20140291874A1 - Membrane humidifier - Google Patents
Membrane humidifier Download PDFInfo
- Publication number
- US20140291874A1 US20140291874A1 US14/001,751 US201214001751A US2014291874A1 US 20140291874 A1 US20140291874 A1 US 20140291874A1 US 201214001751 A US201214001751 A US 201214001751A US 2014291874 A1 US2014291874 A1 US 2014291874A1
- Authority
- US
- United States
- Prior art keywords
- housing
- membrane humidifier
- potting
- sealing
- protruding portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 102
- 238000007789 sealing Methods 0.000 claims abstract description 157
- 238000004382 potting Methods 0.000 claims abstract description 89
- 239000012510 hollow fiber Substances 0.000 claims abstract description 44
- 239000000463 material Substances 0.000 claims description 6
- 239000007789 gas Substances 0.000 description 20
- 239000000446 fuel Substances 0.000 description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 229920003002 synthetic resin Polymers 0.000 description 5
- 239000000057 synthetic resin Substances 0.000 description 5
- 239000002737 fuel gas Substances 0.000 description 4
- 229920002943 EPDM rubber Polymers 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- -1 acryl Chemical group 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/02—Hollow fibre modules
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
- H01M8/04126—Humidifying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/02—Hollow fibre modules
- B01D63/021—Manufacturing thereof
- B01D63/022—Encapsulating hollow fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/02—Hollow fibre modules
- B01D63/04—Hollow fibre modules comprising multiple hollow fibre assemblies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F6/00—Air-humidification, e.g. cooling by humidification
- F24F6/02—Air-humidification, e.g. cooling by humidification by evaporation of water in the air
- F24F6/04—Air-humidification, e.g. cooling by humidification by evaporation of water in the air using stationary unheated wet elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
- H01M8/04126—Humidifying
- H01M8/04149—Humidifying by diffusion, e.g. making use of membranes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1007—Fuel cells with solid electrolytes with both reactants being gaseous or vaporised
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/04—Specific sealing means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M2008/1095—Fuel cells with polymeric electrolytes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
- H01M8/04126—Humidifying
- H01M8/04141—Humidifying by water containing exhaust gases
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Definitions
- a membrane humidifier may use a hollow fiber membrane, and includes a housing and a hollow fiber membrane module mounted in the housing. Operation of the humidifier using the hollow fiber membrane may be affected by external environment. Particularly, the humidifier applied to a fuel cell system for a vehicle should be operated stably in a low-temperature region and a high-temperature region.
- Patent document 0001 Korean Patent Laid-Open Publication No. 10-2009-0013304, Feb. 5, 2009
- Patent document 0002 Korean Patent Laid-Open Publication No. 10-2009-0057773, Jun. 8, 2009
- Patent document 0004 Korean Patent Laid-Open Publication No. 10-2010-0108092, Oct. 6, 2010
- Patent document 0005 Korean Patent Laid-Open Publication No. 10-2010-0131631, Dec. 16, 2010
- Patent document 0007 Korean Patent Laid-Open Publication No. 10-2011-0006122, Jan. 20, 2011
- Patent document 0008 Korean Patent Laid-Open Publication No. 10-2011-0006128, Jan. 20, 2011
- Patent document 0009 Korean Patent Laid-Open Publication No. 10-2011-0021217, Mar. 4, 2011
- Patent document 0010 Korean Patent Laid-Open Publication No. 10-2011-0026696, Mar. 16, 2011
- the present invention has been made in an effort to provide a membrane humidifier having advantages of securing cohesion of a potting portion which fixing a housing and a hollow fiber membrane in spite of temperature change.
- a membrane humidifier in various aspects of the present invention may include: a housing in which a hollow fiber membrane bundle is mounted, the hollow fiber membrane bundle being formed by integrating a plurality of hollow fiber membranes; a potting portion fixing an end portion of the hollow fiber membrane bundle to the housing and coupled to an end portion of the housing so as to hermetically seal the housing; and a sealing member disposed between the housing and the potting portion and hermetically sealing the housing.
- the membrane humidifier may further include a cover coupled to an end portion of the outer wall, wherein the sealing member is disposed between the cover, the outer wall and the potting portion.
- the sealing member may include: a solid-state sealing element mounted at the end portion of the housing; and a liquid-state sealing element mounted between the solid-state sealing element, the end portion of the housing and the potting portion so as to couple the solid-state sealing element, the housing and the potting portion resiliently.
- the solid-state sealing element may include: a sealing body mounted at an end of the housing; and a first protruding portion protruded from the sealing body in a length direction of the housing and disposed between an interior circumference of the end portion of the housing and the liquid-state sealing element.
- the solid-state sealing element may further include a second protruding portion protruded from the sealing body in the length direction of the housing, wherein the end portion of the housing is positioned between the first protruding portion and the second protruding portion.
- the sealing body may include a groove formed on the opposite side of the first protruding portion.
- the sealing body may include at least one crease which can be folded or unfolded.
- the sealing member may include: a sealing body mounted at an end of the housing; a first protruding portion protruded from the sealing body in a length direction of the housing and closely contacting with an interior circumference of the end portion of the housing; and at least one lip extending from the first protruding portion toward the potting portion and resiliently contacting with an external circumferential surface of the potting portion.
- the sealing member may further include a second protruding portion protruded from the sealing body in the length direction of the housing, wherein the end portion of the housing is positioned between the first protruding portion and the second protruding portion.
- the at least one lip may extend slantedly to the length direction of the housing in a straight form. In one or more exemplary embodiments, the at least one lip may extend slanted to the length direction of the housing in a curved form.
- the sealing member may include: a sealing body mounted at an end of the housing; and a first protruding portion protruded from the sealing body in a length direction of the housing, having a predetermined thickness, and disposed between an interior circumference of the end portion of the housing and an external circumferential surface of the potting portion.
- the sealing member may further include at least one rib protruded radially inwardly from an interior circumference of the first protruding portion.
- cross-section of the rib in the length direction may be a trapezoid.
- FIG. 1 is a partial cross-sectional view of a membrane humidifier according to the first exemplary embodiment of the present invention.
- the potting portion 210 is formed by hardening liquid-state synthetic resin such as polyurethane, epoxy, or silicon resin. That is, if the liquid-state potting portion 210 is injected into the end portion of the housing 110 , the liquid-state potting portion 210 fills the gaps between the hollow fiber membranes and is bonded to the interior circumference of the outer wall 112 . At this state, if the liquid-state potting portion 210 is hardened, the potting portion 210 is bonded to the interior circumference of the outer wall 112 .
- liquid-state synthetic resin such as polyurethane, epoxy, or silicon resin.
- FIG. 3 Another example of the sealing member 200 according to the first exemplary embodiment of the present invention is illustrated in FIG. 3 .
- the second protruding portion 233 is not included in the solid-state sealing element 220 ′ shown in FIG. 3 . Since other elements of the solid-state sealing element 220 ′ shown in FIG. 3 are the same as those of the solid-state sealing element 220 shown in FIG. 2 , detailed description thereof will be omitted.
- the membrane humidifier 10 according to the second exemplary embodiment of the present invention is the same as the membrane humidifier 10 according to the first exemplary embodiment of the present invention except the sealing member 520 . Therefore, only the sealing member 520 will be described in detail.
- the sealing body 521 is mounted between the end of the outer wall 112 and the connecting portion 123 of the cover 120 .
Abstract
Description
- This application claims priority to and the benefit of Korean Patent Application No. 10-2011-0146469 filed in the Korean Intellectual Property Office on Dec. 29, 2011, the entire contents of which are incorporated herein by reference.
- (a) Field of the Invention
- The present invention relates to a membrane humidifier. More particularly, the present invention relates to a membrane humidifier having a sealing member interposed between a housing and a potting portion fixing an end portion of a hollow fiber membrane bundle to the housing.
- (b) Description of the Related Art
- A membrane humidifier may use a hollow fiber membrane, and includes a housing and a hollow fiber membrane module mounted in the housing. Operation of the humidifier using the hollow fiber membrane may be affected by external environment. Particularly, the humidifier applied to a fuel cell system for a vehicle should be operated stably in a low-temperature region and a high-temperature region.
- A conventional humidifier further includes a potting portion which integrates end portions of hollow fiber membranes and fixing the end portions of the hollow fiber membranes to the housing. Since heat strain of the potting portion, however, is larger than that of the housing, the potting portion may be separated from the housing or the housing may be broken in a low-temperature or a high-temperature environment. In this case, gas in the housing may leak.
- (Patent document 0001) Korean Patent Laid-Open Publication No. 10-2009-0013304, Feb. 5, 2009
- (Patent document 0002) Korean Patent Laid-Open Publication No. 10-2009-0057773, Jun. 8, 2009
- (Patent document 0003) Korean Patent Laid-Open Publication No. 10-2009-0128005, Dec. 15, 2009
- (Patent document 0004) Korean Patent Laid-Open Publication No. 10-2010-0108092, Oct. 6, 2010
- (Patent document 0005) Korean Patent Laid-Open Publication No. 10-2010-0131631, Dec. 16, 2010
- (Patent document 0006) Korean Patent Laid-Open Publication No. 10-2011-0001022, Jan. 6, 2011
- (Patent document 0007) Korean Patent Laid-Open Publication No. 10-2011-0006122, Jan. 20, 2011
- (Patent document 0008) Korean Patent Laid-Open Publication No. 10-2011-0006128, Jan. 20, 2011
- (Patent document 0009) Korean Patent Laid-Open Publication No. 10-2011-0021217, Mar. 4, 2011
- (Patent document 0010) Korean Patent Laid-Open Publication No. 10-2011-0026696, Mar. 16, 2011
- (Patent document 0011) Korean Patent Laid-Open Publication No. 10-2011-0063366, Jun. 10, 2011
- The above information disclosed in this Background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art.
- The present invention has been made in an effort to provide a membrane humidifier having advantages of securing cohesion of a potting portion which fixing a housing and a hollow fiber membrane in spite of temperature change.
- A membrane humidifier in various aspects of the present invention may include: a housing in which a hollow fiber membrane bundle is mounted, the hollow fiber membrane bundle being formed by integrating a plurality of hollow fiber membranes; a potting portion fixing an end portion of the hollow fiber membrane bundle to the housing and coupled to an end portion of the housing so as to hermetically seal the housing; and a sealing member disposed between the housing and the potting portion and hermetically sealing the housing.
- The housing may include: a hollow receiving portion for mounting the hollow fiber membrane bundle therein; and an outer wall disposed so as to enclose an end portion of the receiving portion, wherein the sealing member is disposed between an interior circumference of the outer wall and the potting portion.
- The membrane humidifier may further include a cover coupled to an end portion of the outer wall, wherein the sealing member is disposed between the cover, the outer wall and the potting portion.
- In one or more exemplary embodiments, the sealing member may include: a solid-state sealing element mounted at the end portion of the housing; and a liquid-state sealing element mounted between the solid-state sealing element, the end portion of the housing and the potting portion so as to couple the solid-state sealing element, the housing and the potting portion resiliently.
- In one or more exemplary embodiments, the solid-state sealing element may include: a sealing body mounted at an end of the housing; and a first protruding portion protruded from the sealing body in a length direction of the housing and disposed between an interior circumference of the end portion of the housing and the liquid-state sealing element.
- In one or more exemplary embodiments, the solid-state sealing element may further include a second protruding portion protruded from the sealing body in the length direction of the housing, wherein the end portion of the housing is positioned between the first protruding portion and the second protruding portion.
- In one or more exemplary embodiments, the sealing body may include a groove formed on the opposite side of the first protruding portion.
- In one or more exemplary embodiments, the sealing body may include at least one crease which can be folded or unfolded.
- In one or more exemplary embodiments, the sealing member may include: a sealing body mounted at an end of the housing; a first protruding portion protruded from the sealing body in a length direction of the housing and closely contacting with an interior circumference of the end portion of the housing; and at least one lip extending from the first protruding portion toward the potting portion and resiliently contacting with an external circumferential surface of the potting portion.
- In one or more exemplary embodiments, the sealing member may further include a second protruding portion protruded from the sealing body in the length direction of the housing, wherein the end portion of the housing is positioned between the first protruding portion and the second protruding portion.
- In one or more exemplary embodiments, the at least one lip may extend slantedly to the length direction of the housing in a straight form. In one or more exemplary embodiments, the at least one lip may extend slanted to the length direction of the housing in a curved form.
- In one or more exemplary embodiments, the sealing member may include: a sealing body mounted at an end of the housing; and a first protruding portion protruded from the sealing body in a length direction of the housing, having a predetermined thickness, and disposed between an interior circumference of the end portion of the housing and an external circumferential surface of the potting portion.
- In one or more exemplary embodiments, the sealing member may further include at least one rib protruded radially inwardly from an interior circumference of the first protruding portion.
- In one or more exemplary embodiments, cross-section of the rib in the length direction may be a trapezoid.
- In one or more exemplary embodiments, the sealing member may further include a second protruding portion protruded from the sealing body in the length direction of the housing, wherein the end portion of the housing is positioned between the first protruding portion and the second protruding portion.
- In one or more exemplary embodiments, the sealing member may be formed as a sheet of flexible material, wherein the sealing member is interposed between the housing and the potting portion by pouring the liquid-state potting portion after the sealing member is positioned on the interior circumference of the end portion of the housing and hardening the liquid-state potting portion.
- Since a difference between thermal deformations of the potting portion and the housing is absorbed by the sealing member, air-tightness of the housing may be secured in a severe temperature condition such as polar regions and tropics according to exemplary embodiments of the present invention. Therefore, the membrane humidifier may be operated stably regardless of external environment.
-
FIG. 1 is a partial cross-sectional view of a membrane humidifier according to the first exemplary embodiment of the present invention. -
FIG. 2 is a cross-sectional view and a perspective view of an exemplary sealing member applicable to a membrane humidifier according to the first exemplary embodiment of the present invention. -
FIG. 3 is a cross-sectional view and a perspective view of another exemplary sealing member applicable to a membrane humidifier according to the first exemplary embodiment of the present invention. -
FIG. 4 is a cross-sectional view and a perspective view of other exemplary sealing member applicable to a membrane humidifier according to the first exemplary embodiment of the present invention. -
FIG. 5 is a partial cross-sectional view of a membrane humidifier according to the second exemplary embodiment of the present invention. -
FIG. 6 is a cross-sectional view and a perspective view of an exemplary sealing member applicable to a membrane humidifier according to the second exemplary embodiment of the present invention. -
FIG. 7 is a cross-sectional view and a perspective view of another exemplary sealing member applicable to a membrane humidifier according to the second exemplary embodiment of the present invention. -
FIG. 8 is a cross-sectional view and a perspective view of other exemplary sealing member applicable to a membrane humidifier according to the second exemplary embodiment of the present invention. -
FIG. 9 is a partial cross-sectional view of a membrane humidifier according to the third exemplary embodiment of the present invention. -
FIG. 10 is a cross-sectional view and a perspective view of an exemplary sealing member applicable to a membrane humidifier according to the third exemplary embodiment of the present invention. -
FIG. 11 is a cross-sectional view and a perspective view of another exemplary sealing member applicable to a membrane humidifier according to the third exemplary embodiment of the present invention. -
FIG. 12 is a cross-sectional view and a perspective view of other exemplary sealing member applicable to a membrane humidifier according to the third exemplary embodiment of the present invention. - Exemplary embodiments of the present invention will hereinafter be described in detail so as to be easily executed by a person of an ordinary skill in the art. However, the present invention will be realized in various embodiments and is not limited to the exemplary embodiments described herein.
- A membrane humidifier according to an exemplary embodiment of the present invention can be used in a fuel cell system. For better comprehension and ease of description, the membrane humidifier used in the fuel cell system will hereinafter be described. However, sprits of the present invention will not be limited to the membrane humidifier used in the fuel cell system.
- The humidifier for a fuel cell is adapted to supply moisture to dried fuel gas or dried operating gas using humidified air discharged from the fuel cell. As known to the art, the fuel gas or the operating gas passes through a passage formed in a hollow fiber membrane, the humidified air passes the exterior of the hollow fiber membrane, and the moisture in the humidified air penetrates the hollow fiber membrane due to water permeability of hollow fiber membrane and is supplied to the fuel gas or the operating gas.
- For better comprehension and ease of description, air discharged from the fuel cell and containing a large amount of moisture will be called humidified gas, and fuel gas or operating gas humidified by the humidified gas will be called operating gas.
- A hollow fiber membrane bundle is mounted in a housing forming an appearance, and both ends of hollow fiber membranes are fixed in the housing by a potting portion formed by hardening synthetic resin. That is, in a state that the hollow fiber membrane bundle is inserted in the housing, the liquid-state synthetic resin is poured in the housing and is hardened so as to form the potting portion. The liquid-state synthetic resin fills gaps between the hollow fiber membranes and is bond to an interior circumference of the housing.
- A sealing member is disposed between the housing and the potting portion.
- The housing is typically made of hard plastic such as polycarbonate or metal, and the potting portion is formed by hardening the liquid-state synthetic resin such as polyurethane, epoxy, or silicon resin.
- Since the housing and the potting portion are made of different materials, heat strains of the housing and the potting portion differ from each other. Therefore, the potting portion is contracted or expanded more than the housing in low temperature or high temperature. In this case, the potting portion may be separated from the housing or the housing may be broken. The sealing member according to an exemplary embodiment of the present invention absorbs a difference between thermal deformations of the potting portion and the housing so as to couple the potting portion and the housing strongly.
- The sealing member is interposed between the housing and the potting portion and hermetically seals the housing. The sealing member may be inserted in the potting portion or may be positioned in a sealing recess formed at an edge of the potting portion.
- In one or more exemplary embodiments, the sealing member may include a liquid-state sealing element and a solid-state sealing element. The solid-state sealing element is made of silicon, acryl rubber, EPDM, or NBR, and the liquid-state sealing element is made of silicon or urethane.
- In one or more exemplary embodiments, the sealing member may include only the solid-state sealing element, and the solid-state sealing element may include at least one lip. That is, the solid-state sealing element is inserted in the sealing recess formed at the edge of the potting portion, and the at least one lip is extended from the solid-state sealing element toward the potting portion and is resiliently contacted with an external circumferential surface of the potting portion.
- In one or more exemplary embodiments, the sealing member is formed as a sheet of flexible material. After the sheet is positioned in the housing, the liquid-state potting portion is poured and is hardened. In this case, the sheet is adapted to absorb deformation of the potting portion. The sheet should be bonded to the potting portion well.
- Hereinafter, the membrane humidifier according to exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
-
FIG. 1 is a partial cross-sectional view of a membrane humidifier according to the first exemplary embodiment of the present invention, andFIG. 2 toFIG. 4 are cross-sectional views and perspective views of sealing members applicable to the membrane humidifier according to the first exemplary embodiment of the present invention. - A side portion of the membrane humidifier according to the first exemplary embodiment of the present invention is illustrated in
FIG. 1 . Since the other side portion of the membrane humidifier is the same as or is similar to the side portion of the membrane humidifier, only the side portion of the membrane humidifier will be described. - As shown in
FIG. 1 , themembrane humidifier 10 according to the first exemplary embodiment of the present invention includes ahousing 110, acover 120, a hollowfiber membrane bundle 310, apotting portion 210 and a sealingmember 200. - The
housing 110 and thecover 120 form a shape of themembrane humidifier 10 and are made of hard plastic such as polycarbonate or metal. - The
housing 110 has a cylindrical shape substantially and includes a receivingportion 111 and anouter wall 112. - A hollow space is formed in the receiving
portion 111, and a through-hole 114 is formed at an end portion of the receivingportion 111. - The
outer wall 112 is formed integrally with the receivingportion 111 and encloses the end portion of the receivingportion 111 and the through-hole 114. An input port (not shown) into which humidified gas is flowed or an output port (not shown) from which the humidified gas is discharged is formed at theouter wall 112. Therefore, the humidified gas supplied to the input port passes through the through-hole 114 and flows in the receivingportion 111 so as to supply moisture to the operating gas passing in the hollow fiber membranes. After that, the humidified gas in the receivingportion 111 flows into a space between theouter wall 112 and the receivingportion 111 through the through-hole 114, and is discharged to the exterior of themembrane humidifier 10 through the output port. - The
cover 120 is coupled to theouter wall 112 of thehousing 110 and includes afront surface 121, aconical portion 122, a connectingportion 123 and a coupling portion 125. - The
front surface 121 has a flat disk shape, and an inlet 125 for receiving the operating gas or an outlet 135 for discharging the operating gas to which the moisture is supplied is formed at thefront surface 121. Therefore, the operating gas flowing in through the inlet 125 passes through a passage formed in the hollow fiber membrane and is discharged through the outlet 135. When the operating gas passes through the passage formed in the hollow fiber membrane, the moisture is supplied to the operating gas through the hollow fiber membrane. - The
conical portion 122 is extended from thefront surface 121 toward thehousing 110, and an end of theconical portion 122 is connected to thefront surface 121. A diameter of theconical portion 122 becomes larger from thefront surface 121 to the connectingportion 123. - The connecting
portion 123 is connected to the other end of theconical portion 122 and extends radially outwardly so as to be parallel with thefront surface 121. - The coupling portion 125 extends from the connecting
portion 123 in the length direction of thehousing 110 and is coupled to theouter wall 112. - The hollow
fiber membrane bundle 310 is mounted in the receivingportion 111 of thehousing 110. The hollow fiber membrane selectively passes the moisture. Material and structure of the hollow fiber membrane are well known to a person of an ordinary skill in the art, and thus detailed description of the hollow fiber membrane will be omitted in this specification. A plurality of hollow fiber membranes is integrated in the hollowfiber membrane bundle 310. - The
potting portion 210 connects end portions of the hollow fiber membranes with each other and fills gaps between the hollow fiber membranes. In addition, thepotting portion 210 is bonded to an interior circumference of an end portion of theouter wall 112 such that the operating gas flowing into a space between the pottingportion 210 and thecover 120 and the humidified gas flowing into a space between the pottingportion 210 and thehousing 110 are not mixed with each other. - As described above, the
potting portion 210 is formed by hardening liquid-state synthetic resin such as polyurethane, epoxy, or silicon resin. That is, if the liquid-state potting portion 210 is injected into the end portion of thehousing 110, the liquid-state potting portion 210 fills the gaps between the hollow fiber membranes and is bonded to the interior circumference of theouter wall 112. At this state, if the liquid-state potting portion 210 is hardened, thepotting portion 210 is bonded to the interior circumference of theouter wall 112. - On the contrary, the
potting portion 210 may be hardened at an additional jig, and thehardened potting portion 210 may be press-fitted to the interior circumference of theouter wall 112 in extremely cold temperature. After that, as a temperature of thepotting portion 210 rises, thepotting portion 210 is expanded and is closely fitted in the interior circumference of theouter wall 112. - Since a pair of
potting portions 210 is bonded to both ends of thehousing 110, both end portions of the hollowfiber membrane bundle 310 are fixed to thehousing 110. - As described above, a sealing
recess 212 is formed at an edge of thepotting portion 210. - The sealing
member 200, as shown inFIG. 1 andFIG. 2 , is interposed between theouter wall 112 and thepotting portion 210 and hermetically seals thehousing 110. Particularly, the sealingmember 200 is positioned in thesealing recess 212 formed at thepotting portion 210. In the first exemplary embodiment of the present invention, the sealingmember 200 includes a solid-state sealing element 220 and a liquid-state sealing element 221. Particularly, the liquid-state sealing element 221 is adapted to absorb a difference between thermal deformations of thepotting portion 210 and thehousing 110. - The solid-
state sealing element 220 is mounted at the end portion of theouter wall 112, and the liquid-state sealing element 221 is mounted between the solid-state sealing element 220, the end portion of theouter wall 112 and thepotting portion 210 so as to resiliently couple the solid-state sealing element 220, theouter wall 112, and thepotting portion 210. The solid-state sealing element 220 is made of silicon, acryl rubber, EPDM, or NBR, and the liquid-state sealing element 221 is made of silicon or urethane. - As shown in
FIG. 1 andFIG. 2 , the solid-state sealing element 220 includes a sealingbody 231 mounted between an end of theouter wall 112 and the connectingportion 123 of thecover 120, a first protrudingportion 232 protruded from the sealingbody 231 in the length direction of thehousing 110 and disposed between an interior circumference of the end portion of theouter wall 112 and the liquid-state sealing element 221, and a second protrudingportion 233 protruded from the sealingbody 231 in the length direction of thehousing 110 and disposed between an external circumferential surface of the end portion of theouter wall 112 and thecoupling portion 124 of thecover 120. Therefore, the end portion of theouter wall 112 is positioned between the first protrudingportion 232 and the second protrudingportion 233. - Meanwhile, a
groove 235 may be formed on the opposite side of the first protrudingportion 232. Thegroove 235 may be formed to burrow into the first protrudingportion 232. Thegroove 235 can absorb deformation of thepotting portion 210. - In addition, since the liquid-
state sealing element 221 is positioned between the first protrudingportion 232 and thepotting portion 210, the liquid-state sealing element 221 can absorb the difference between the thermal deformations of thehousing 110 and thepotting portion 210. - Another example of the sealing
member 200 according to the first exemplary embodiment of the present invention is illustrated inFIG. 3 . The second protrudingportion 233 is not included in the solid-state sealing element 220′ shown inFIG. 3 . Since other elements of the solid-state sealing element 220′ shown inFIG. 3 are the same as those of the solid-state sealing element 220 shown inFIG. 2 , detailed description thereof will be omitted. - The other example of the sealing
member 200 according to the first exemplary embodiment of the present invention is illustrated inFIG. 4 . The sealingbody 231 of the solid-state sealing element 220″ shown inFIG. 4 includes at least one crease 234 which can be folded or unfolded. Since other elements of the solid-state sealing element 220″ shown inFIG. 4 are the same as those of the solid-state sealing element 220 shown inFIG. 2 , detailed description thereof will be omitted. -
FIG. 5 is a partial cross-sectional view of a membrane humidifier according to the second exemplary embodiment of the present invention, andFIG. 6 toFIG. 8 are cross-sectional views and perspective views of the sealing members applicable to the membrane humidifier according to the second exemplary embodiment of the present invention. - As shown in
FIG. 5 , themembrane humidifier 10 according to the second exemplary embodiment of the present invention is the same as themembrane humidifier 10 according to the first exemplary embodiment of the present invention except the sealingmember 520. Therefore, only the sealingmember 520 will be described in detail. - As shown in
FIG. 5 , the sealingmember 520 according to the second exemplary embodiment of the present invention includes only the solid-state sealing element. Instead, the sealingmember 520 has a structure for absorbing the difference between the thermal deformations of thehousing 110 and thepotting portion 210. - As shown in
FIG. 5 andFIG. 6 , the sealingmember 520 according to the second exemplary embodiment of the present invention includes a sealingbody 521, a first protrudingportion 522 and at least onelip - The sealing
body 521 is mounted between the end of theouter wall 112 and the connectingportion 123 of thecover 120. - The first protruding
portion 522 is protruded from the sealingbody 521 in the length direction of thehousing 110 and is closely contacted with the interior circumference of the end portion of theouter wall 112. - At least one
lip portion 522 toward thepotting portion 210 and includes afirst lip 523, asecond lip 524 and athird lip 525. - The first and
third lips potting portion 210 and absorb the difference between the thermal deformations of thehousing 110 and thepotting portion 210. For this purpose, the first andthird lips - The
second lip 524 does not contact with the external circumferential surface of thepotting portion 210. When thepotting portion 210 deforms more than thehousing 110, thesecond lip 524 supports thepotting portion 210 and prevents breakage of the first andthird lips - Meanwhile, the first and
third lips - Another example of the sealing
member 520′ according to the second exemplary embodiment of the present invention is illustrated inFIG. 7 . The sealingmember 520′ shown inFIG. 7 further includes the second protrudingportion 526. The second protrudingportion 526 is protruded from the sealingbody 521 in the length direction of thehousing 110, and is disposed between the external circumferential surface of the end portion of theouter wall 112 and thecoupling portion 124 of thecover 120. Therefore, the end portion of theouter wall 112 is disposed between the first protrudingportion 522 and the second protrudingportion 526. - Since other elements of the sealing
member 520′ shown inFIG. 7 are the same as those of the sealingmember 520 shown inFIG. 6 , detailed description thereof will be omitted. - The other example of the sealing
member 520″ according to the second exemplary embodiment of the present invention is illustrated inFIG. 8 . The first andthird lips member 520″ shown inFIG. 8 are extended in a curved form. Since other elements of the sealingmember 520″ shown inFIG. 8 are the same as those of the sealingmember 520 shown inFIG. 6 , detailed description thereof will be omitted. -
FIG. 9 is a partial cross-sectional view of a membrane humidifier according to the third exemplary embodiment of the present invention.FIG. 10 toFIG. 12 are cross-sectional views and perspective views of the sealing members applicable to the membrane humidifier according to the third exemplary embodiment of the present invention. - As shown in
FIG. 9 , the sealingmember 620 according to the third exemplary embodiment of the present invention includes only the solid-state sealing element. instead, the sealingmember 620 is formed as a sheet of flexible material and has a predetermined thickness so as to absorb the difference between the thermal deformations of thehousing 110 and thepotting portion 210. - As shown in
FIG. 9 andFIG. 10 , the sealingmember 620 according to the third exemplary embodiment of the present invention includes a sealingbody 621, a first protrudingportion 622, at least onerib 623 and a second protrudingportion 624. - The sealing
body 621 is mounted between the end of theouter wall 112 and the connectingportion 123 of thecover 120. - The first protruding
portion 622 is protruded from the sealingbody 621 in the length direction of thehousing 110 and is closely contacted with the interior circumference of the end portion of theouter wall 112. Since the first protrudingportion 622 has the predetermined thickness, the first protrudingportion 622 is configured to absorb the difference between the thermal deformations of thehousing 110 and thepotting portion 210. - The at least one
rib 623 is protruded toward thepotting portion 210. Since a cross-section of therib 623 in the length direction is a trapezoid, therib 623 is configured to absorb the difference between the thermal deformations of thehousing 110 and thepotting portion 210. In addition, the external circumferential surface of thepotting portion 210 has a shape corresponding to therib 623. That is, thepotting portion 210 is formed by pouring and hardening the liquid-state potting portion 210 after the sealingmember 620 is positioned at the end portion and the interior circumference of theouter wall 112. - The second protruding
portion 624 is protruded from the sealingbody 621 in the length direction of thehousing 110 and is disposed between the external circumferential surface of the end portion of theouter wall 112 and thecoupling portion 124 of thecover 120. Therefore, the end portion of theouter wall 112 is positioned between the first protrudingportion 622 and the second protrudingportion 624. - Another example of the sealing
member 620′ according to the third exemplary embodiment of the present invention is illustrated inFIG. 11 . Therib 623 is not included in the sealingmember 620′ shown inFIG. 11 . Since other elements of the sealingmember 620′ shown inFIG. 11 are the same as those of the sealingmember 620 shown inFIG. 10 , detailed description thereof will be omitted. - The other example of the sealing
member 620″ according to the third exemplary embodiment of the present invention is illustrated inFIG. 12 . The second protrudingportion 624 is not included in the sealingmember 620″ shown inFIG. 12 . Since other elements of the sealingmember 620″ shown inFIG. 12 are the same as those of the sealingmember 620 shown inFIG. 10 , detailed description thereof will be omitted. - While this invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (17)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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KR10-2011-0146469 | 2011-12-29 | ||
KR20110146469 | 2011-12-29 | ||
PCT/KR2012/011665 WO2013100677A1 (en) | 2011-12-29 | 2012-12-28 | Membrane humidifier |
Publications (2)
Publication Number | Publication Date |
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US20140291874A1 true US20140291874A1 (en) | 2014-10-02 |
US9190677B2 US9190677B2 (en) | 2015-11-17 |
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Application Number | Title | Priority Date | Filing Date |
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US14/001,751 Active 2033-05-04 US9190677B2 (en) | 2011-12-29 | 2012-12-28 | Membrane humidifier |
Country Status (6)
Country | Link |
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US (1) | US9190677B2 (en) |
EP (2) | EP2798691B1 (en) |
JP (1) | JP5690975B2 (en) |
KR (1) | KR101697998B1 (en) |
DK (1) | DK2798691T3 (en) |
WO (1) | WO2013100677A1 (en) |
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DE102015001866A1 (en) | 2014-12-18 | 2016-06-23 | Daimler Ag | Humidifier for a fuel cell system, fuel cell system and vehicle having a fuel cell system |
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Also Published As
Publication number | Publication date |
---|---|
EP2798691A1 (en) | 2014-11-05 |
EP3327844B1 (en) | 2019-07-31 |
JP5690975B2 (en) | 2015-03-25 |
WO2013100677A1 (en) | 2013-07-04 |
KR20140117346A (en) | 2014-10-07 |
JP2014522556A (en) | 2014-09-04 |
EP3327844A1 (en) | 2018-05-30 |
EP2798691A4 (en) | 2015-09-30 |
US9190677B2 (en) | 2015-11-17 |
EP2798691B1 (en) | 2018-11-21 |
DK2798691T3 (en) | 2019-03-18 |
KR101697998B1 (en) | 2017-01-23 |
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